CN202032102U - Bidirectional high-performance soft seal butterfly valve - Google Patents
Bidirectional high-performance soft seal butterfly valve Download PDFInfo
- Publication number
- CN202032102U CN202032102U CN2010206706383U CN201020670638U CN202032102U CN 202032102 U CN202032102 U CN 202032102U CN 2010206706383 U CN2010206706383 U CN 2010206706383U CN 201020670638 U CN201020670638 U CN 201020670638U CN 202032102 U CN202032102 U CN 202032102U
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- valve
- plate
- butterfly
- sealing
- valve body
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- Expired - Fee Related
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Abstract
The utility model relates to the field of valve technology, particularly a bidirectional high-performance soft seal butterfly valve, which is characterized by comprising a valve body, a valve rod, an inter-hexagon screw, an O-shaped sealing ring, a pin, a bufferfly plate, a non-metallic sealing ring, a plate-pressing ring and an operation mechanism. The bidirectional high-performance soft seal butterfly valve is equipped with the non-metallic sealing ring and the non-metallic sealing ring is embedded on the valve body. The valve body of the bidirectional high-performance soft seal butterfly valve is equipped with the plate-pressing ring and the plate-pressing ring is equipped wit the O-shaped sealing ring. Therefore, the medium is prevented from leaking out from the contact part of the valve body and a pressing plate. The outer periphery of the butterfly plate needs to be processed and is ground to be arc-shaped. The butterfly plate is connected with the valve rod via the pin or a flat key. The valve rod is connected with the operation mechanism. By improving the sealing structure of a valve, the sufficient sealing force of the sealing structure of the valve can be ensured so as to realize the sealing performance regardless of forward or reverse pressing.
Description
Technical field
The utility model relates to valve technology field, especially two-way high-performance soft seal butterfly valve.
Background technique
Butterfly valve is to be that a kind of valve with the regulated fluid passage is opened, closed to about 90 ° of butterfly plate reciprocating rotatings with the disc type open-shut device.Existing universal soft sealing butterfly valve adopts two eccentric structures to design, its valve seat is directly built-up welding stainless steel formation on valve body, and nonmetal seal ring is fixed on the butterfly plate by the pressing plate circle, and the valve seat precision machining is tapered, nonmetal seal ring has the direct compression moulding of mould, and its outer rim is circular-arc.Operating device drives valve rod, and nonmetal seal ring is rotated with butterfly plate, and the outer rim of seal ring is squeezed in and produces sealing force realization sealing on the valve body sealing surface when closed position.But the butterfly valve of this structure is because its structural feature has determined medium to flow into from an end of valve, if medium oppositely flows into, sealing effect is not obvious, and promptly existing universal soft sealing butterfly valve has the medium one-way flow.
Summary of the invention
In order to overcome the problem in the above-mentioned background technology, it is a kind of simple in structure that the utility model provides, all good high-performance soft seal butterfly valve of two way sealed effect, and it has effectively been eliminated because the valves leakage problem that the medium reverse flow produces.
Two-way high-performance soft seal butterfly valve, it is characterized in that, comprise: valve body 1, valve rod 2, socket head screw 3, O RunddichtringO 4, pin 5, butterfly plate 6, nonmetal seal ring 7, pressing plate circle 8, operating device 9, described two-way high-performance soft seal butterfly valve is provided with nonmetal seal ring 7, described nonmetal seal ring 7 is embedded on the valve body 1, and at the area of contact of its back side increase with medium, the pressure medium that seal ring bears when increasing back-pressure; Described nonmetal seal ring 7 is compression moulding, does not need factory process, and smooth surface, zero defect, and interchangeability is good; Described two-way high-performance soft seal butterfly valve is provided with pressing plate circle 8 on valve body 1, on the described pressing plate circle 8 O RunddichtringO 4 is set, and stops medium to be leaked by the contacting point of valve body 1 and pressing plate circle 8.Circular arc need be processed and grind to form to described butterfly plate 6 outer rims, and described butterfly plate 6 is connected with valve rod 2 by pin 5 or flat key, and described valve rod 2 is connected with operating device 9.
The utility model is by after improving sealing configuration, and no matter forward is still oppositely exerted pressure, and the sealing configuration of valve can both keep enough sealing forces, guarantees sealing.
Description of drawings
Fig. 1 is the sectional view of two-way high-performance soft seal butterfly valve;
Fig. 2 is the outline drawing of two-way high-performance soft seal butterfly valve;
Sealing schematic representation when Fig. 3 exerts pressure for the utility model medium forward;
Sealing schematic representation when Fig. 4 oppositely exerts pressure for the utility model medium.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
As shown in Figure 1, the utility model butterfly valve comprises valve body 1, valve rod 2, and wherein valve rod 2 is connected with butterfly plate 6 by pin 5, and the rotational motion of operating device 9 is passed on the butterfly plate 6 by valve rod 2; Pressing plate circle 8 is pressed onto nonmetal seal ring 7 on the valve body 1 by socket head screw 3, and O RunddichtringO 4 is set on pressing plate circle 8, stops medium to be leaked by the contacting point of valve body 1 and pressing plate circle 8.
As shown in Figure 3, during the medium forward flow, the gradually reduce nonmetal seal ring 7 of elastic material of throttle down, butterfly plate 6 is realized the forwards sealing, and the size of sealing force is determined by decrement.When product specification and assembling, make butterfly plate 6 external arc peaks depart from the sealing surface center, like this, even if in use for some time, still can make butterfly plate 6 external arc peaks near the sealing surface center during nonmetal seal ring 7 small amount of wear, make seal ring keep enough decrements by adjusting the limit stoper on the operating device 9, realize sealing, thereby prolong the working life of valve.
As shown in Figure 4, during the medium reverse flow, throttle down, butterfly plate 6 are subjected to medium power effect meeting generation micro-deformation left, the decrement of sealing material is reduced, sealing force reduces, and is unfavorable for the sealing of valve, but simultaneously because the area that nonmetal seal ring 7 right sides contact with medium is big, to make nonmetal seal ring 7 produce huge active force left, force it to press to butterfly plate 6, remedy because the sealing force that the stress deformation of butterfly plate descends realizes oppositely sealing.
The utility model is because forward and oppositely can both realize sealing, and is fit to very much be applied in the pressure piping MEDIA FLOW in the system that reverse requirement is arranged, and by selecting different nonmetal soft sealing materials for use, can satisfy in the different system requirement to medium temperature.
Claims (1)
1. two-way high-performance soft seal butterfly valve, it is characterized in that, comprise: valve body, valve rod, socket head screw, O RunddichtringO, pin, butterfly plate, nonmetal seal ring, pressing plate circle, operating device, described two-way high-performance soft seal butterfly valve is provided with nonmetal seal ring, described nonmetal seal ring is embedded on the valve body, described valve body is provided with the pressing plate circle, on the described pressing plate circle O RunddichtringO is set, circular arc need be processed and grind to form to described butterfly plate outer rim, described butterfly plate is connected with valve rod by pin or flat key, and described valve rod is connected with operating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206706383U CN202032102U (en) | 2010-12-17 | 2010-12-17 | Bidirectional high-performance soft seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206706383U CN202032102U (en) | 2010-12-17 | 2010-12-17 | Bidirectional high-performance soft seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202032102U true CN202032102U (en) | 2011-11-09 |
Family
ID=44894399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206706383U Expired - Fee Related CN202032102U (en) | 2010-12-17 | 2010-12-17 | Bidirectional high-performance soft seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202032102U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527796A (en) * | 2013-10-29 | 2014-01-22 | 华东阀门有限公司 | Bidirectional pressure-bearing hard seal butterfly valve |
-
2010
- 2010-12-17 CN CN2010206706383U patent/CN202032102U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527796A (en) * | 2013-10-29 | 2014-01-22 | 华东阀门有限公司 | Bidirectional pressure-bearing hard seal butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20121217 |